Nissan R35 GT-R GR6 Gearbox Upgrade


The GR6 gearbox installed in the Nissan R35 GTR is a highly developed and sophisticated unit, with the responsibility to deliver the enormous power from the VR38DETT Engine to the road wheels. There are, however, some well known inherent issues with the transmission that can be rectified with some preventative maintenance and upgrades from Auto Torque. For complete peace of mind, we recommend having upgrades carried out before any costly issues arrive further down the line.

Auto Torque GT-R Billet Sump Pan

The Auto torque GTR R35 transmission sump is a direct bolt on replacement, As we see so many OEM steel sump pans rust and corrode it made perfect sense to develop our very own Alloy version made from billet aluminium. This prolongs the life as it will never rust, we have also redesigned it with added cooling fins on the face where it receives air flow from the GTR undertray. In addition to this it has a -8 take off so an added cooler can be installed if required.

All our sumps come with a life time warranty, -8 blank, new Genuine Nissan Gasket, OEM sump drain plug and all the necessary fixings so it is ready to install.

£435 ex VAT, Plus fitting & Oils

Options are to have it replaced with Dodson resuable filters and Pentosin FFL-R transmission fluid independantly or tied in with a full fluid service.

Click here for more information.


Does your Nissan GTR have the well known bellhousing rattle? The bellhousing is a common problem on many GTRs, and within the lifetime of the car, the bell housing will need a replacement usually around the 25k/30k mile mark. As a result of this, we can offer the Auto Torque revised design bellhousing in order to silence these notoriously noisey parts. We offer a same day fitting service on a part exchange fitting service.

Supplied and fitted £850 ex VAT


Perhaps the most widely known upgrade when discussing the GR6 gearbox, are the notorious ‘cir-clips’. These small but vital parts were prone to failure in the early MY09 cars and resulted in very costly repairs for owners. A straightforward preventative upgrade is available and replaces three basic cir-clips for much more robust CNC machined items manufactured in the UK.


  • CNC machined from billet
  • Heat treated for strength
  • One piece design
  • Balanced for high rpm’s
  • Direct replacement for stock cir-clips
  • Cir-clip 1 fits main input shaft
  • Cir-clip 2 fits output shaft
  • Cir-clip 3 fits 4WD shaft

Price: Please call us on 01296 658257


These uprated solenoid clips are designed to replace the standard items that can become rounded off over time and allow the pistons to rotate. This revised design is the answer to stop the piston rotation from happening by clipping on to the centre of the piston and providing a stronger more durable edge for the selector fork to work against.
The below photo show clips over the lower of the two pistons providing a much broader area to work against.

Price: Please call us on 01296 658257


A cost effective solution and a straightforward installation, to give your transmission added protection against material which may lead to wear over time.


We are pleased to offer the GTR Gearbox software update for all 2008 – 2022 Nissan GTRs which will bring the gearbox software calibration up to date with the latest 2022 model. This change will significantly improve the gearbox operation and transform the way the car drives. When combined with our engine ECU upgrades this gives the vehicle, driver control adjustable launch control for the perfect getaway.

The upgrade includes:

  • Much improved gearbox control
  • Smoother pulling away from junctions
  • Improved hill start mode
  • Holds TCM and Traction settings in Race Mode when switching between Automatic and Manual modes
  • Latest Nissan Launch Control settings (LC4)
  • Custom Driver Adjustable Launch RPM with Cruise Control switch
  • Adjustable Launch Mode Fueling, Ignition Timing, Variable Valve Timing and more to help big turbo cars create boost at idle.

Price £250 ex.VAT (including ECUTek licence)

Have a look at our Nissan GTR Performance Packages and our other Nissan GTR Performance Part Upgrades